bug: expression evaluation fails with large payloads in step input transforms (QuickJS) #8073
Description
Describe the bug
When running a Flow with large input payloads , any step that uses expression evaluation in step inputs fail during evaluation.
This error does not occur when the input data is small — the same flow and expressions run successfully with smaller payloads. The failure only appears once the input size becomes large.
To reproduce
- Create a new Flow.
- Add Step 1 (TypeScript) and execute the following JavaScript code inside the step code:
Array.from({ length: 1000000 }, (_, i) => [i, i + 1, i + 2]).flat()
Run the flow and confirm Step 1 completes successfully.
- Add Step 2 (TypeScript).
In the step input transform expression ( evaluated directly in the step input), use the same expression:
Run the flow again.
- Observe that Step 2 fails with: QuickJS evaluation error: Exception generated by quickjs
Expected behavior
Both Step 1 (script execution) and Step 2 (expression evaluation in step inputs) should succeed and return the same flattened array output.
Screenshots
Browser information
No response
Application version
CE v1.641.0
Additional Context
No response